Power transmitting device



Oc. 22,1935. o. BRATZ POWER TRANSMITTING DEVICE Filed NOV. 13, 1935 Z RT Y m4 m N@ m W5 n im A l" il f "HL Illllllm Patented Oct. 22, 1935 UNITED STATES POWER TRANSINIITTING DEVICE Otto Bratz, Adrian,

Cable Company, Inc.,

Mich., assigner to American Bridgeport, Conn., a

corporation of Delaware Application November 13,

1933, Serial No. 697,877

4 claims. (ci. vs -5oz) The present invention relates to power transmitting devices of the reciprocating type coinprising in general a tubular casing or guide member through which passes an elongated flexible tension and/o-r compression member, power being transmitted by eiecting longitudinal movement of one member with respect to the other.

An object of the present invention is to provide a structure of the character described above which is particularly adapted to impart motionto an oscillatable member, such, for instance, as a lever arm.

If the power transmitting member is directly attached to the lever it must not only move lengthwise but also be capable of angular movement in the plane of oscillation of the lever in order to accommodate itself to the arc of travel of its point of attachment to the lever. Hence, it is a speciiic object of my invention to provide an improved power transmitting device which will permit of such relative oscillatory movement of the terminal portions of the inner and outer members.

A more specic object of the present invention is to provide the casing member with a rigid sleeve extension, and the inner member with a rigid rodelike extension, the sleeve extension being formed at or adjacent its outer end with means providing a fulcrum for relative oscillation of the rod and sleeve.

With these and other objects in view I shall now describe a preferred embodiment of my invention and thereafter shall point out the novelty and scope of the invention in the claims.

The accompanying drawing is a fragmental side view, partly in section, illustrating a structure embodying my invention.

One end of a flexible tubular casing is shown at I0 in the drawing. This casing may be of wellknown construction comprising a set of wires bound together and iitted into ferrules at opposite ends of the casing. One of these ierrules is shown at I I in the drawing. The errule is formed at its outer end with a part I2 of reduced diameter on which a sleeve I3 is tted. The part I2 is formed with an annular groove or recess I4 into which the sleeve is swaged, as indicated at I5, so as to fasten the sleeve securely to the ferrule. The sleeve extends outwardly to a considerable distance beyond the ferrule and virtually forms a rigid extension of the'tubular casing I0. Fitted to slide within the tubular casing is an extended flexible member IB. This may consist of a single wire, a flexible rod, a cable strand, or any other body which may serve as a tension member or a compression member or both. Hereafter, the

i for relative oscillation of the sleeve member I6 will be termed the strand, although it will be understood that this termis intended to include any suitable structure of the character just described. The strand projects into the sleeve I3 and is rmly secured in a terminal rod I1. The latter is threaded at its outer end into a forked tting I9 and may be secured at desired adjustment on said fitting by means of a jam nut 2U. The forked fitting I9 embraces the end of a lever arm 2i to which it is pivotally secured 10 by a pin 22. 1

The sleeve I3 is formed with an annular indentation 23 adjacent its outer end so that an annular bearing or fulcrum 24 is formed on the inner surface of the sleeve. The rod I1 is adapted 15 to slide freely in this bearing 2d and may also oscillate therein because the bearing has a convex curvature in axial section.

In operation the ferrule I I is secured to a fixed support (not shown) and since the rod may oscillate as it slides it will adapt itself to various angular positions which it must take by reason of its pivotal attachment to the lever 2I. The drawing shows the 1ever in its extreme position to the right and the broken line 2Ia shows the position the lever takes as it is swung to its extreme position toward the left. The center o! the pin 22 is thus carried through an arc indicated by the broken line and consequently the rod I1 must oscillate in the bearing or fulcrum 24 as it slides from one position to the other. It will be understood that the bearing 24 is made free enough to permit of the necessary oscillation and that the flexible strand IB accommodates itself to the tilt of the rod I1. However, the maximum length between the rod VI1 and the end of the ierrule portion I2 is such to prevent buckling of the member I6 so that said member is properly guided by the sleeve I3 and its annular fulcrum While I have described a preferred embodiment of my invention, it will be understood that this is to be taken as illustrative and not limitative and that I reserve the right to make such changes in form, construction and arrangement of parts as 45 fall within the spirit and scope of the following claims.

I claim:

1. 1n combination, a flexible tubular casing formed with a rigid terminal sleeve portion, a ex- 50 ible strand slidable in the casing and having a rigid terminal rod portion xed thereto, and means on the sleeve portion providing a Iulcrum and rod.

2. In combination, a flexible tubular casing V-2-f`AnA formed with a rigid terminal sleeve portion, a iiexible strand slidable in the casing and having a rigid terminal rod portion xed thereto, the sleeve portion having a reduced bearing part of convex curvature in axial section adjacent'its outer end gh which the rod portion may slide and oscillate relatively to the sleeve.V

3. In combination, a iiexible tubular casing formed with a rigid terminal sleeve portion, a ilexible strand slidable in the oasingand having a rigid terminal rod portion iixed'thereto, the sleeve portion havingan annular indentation adjacent its outer end to provide a bearing through which the rod portion may slide and osoillate relatively to the sleeve portion.

4. In combination, a. exible tubular casing formed with a ferrule at one end, a sleeve adapted to t on the ferrule, means attaching the sleeve to the ferrule to formv a rigid extension of the tubular casing, a. strand slidable in the casing and formed with a rigid terminal rod portion, the sleeve being provided at its outer end with an annular indentation to serve as `a bearing through which the rod may slide and oscillate relatively'to the sleeve. Y

OTTO BRATZ.- 

